KTP Crystal Options
KTP Crystal Options
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The utmost repetition amount has long been determined by the most repetition level of the intracavity EO modulator (Laptop) used for seeding in and extracting pulses in the amplifier. The Personal computer repetition is restricted through the damping rate from the oscillations inside the crystal birefringence that arise from the excitation of For every in the crystal. The For every is created from the piezoelectric outcome and might be quantified using the piezoelectric constant connected to crystal framework and ferroelectric domains. PER of KDP and KTP were being captured at significant voltage from 10 kHz to 200 kHz are illustrated in Fig.
95%. Owing to the massive 2nd-get nonlinear optical coefficient and sufficiently big crystal of KTP, its software is tough to get replaced within the range permitted through the wavelength of KTP. Concurrently, When the HKTP with a lot less decline and higher conversion effectiveness is made use of, it will also play a task in improving the laser Vitality of some wavelengths significantly reduce in comparison to the 1064 nm laser.
Hence, the focal length of lens is tunable by adequately controlled the optical period as aspheric or Fresnel lens period profile. e EO laser beam scanner refract mild by making use of a period hold off by changing the refractive index with the medium, and by changing the voltage placed on the crystal to change the steering angle to EO Manage the section delay across the beam cross-segment. f Polarization modulator can As a result be noticed like a voltage-controlled waveplate, and it may be used for modulating the polarization condition
We pick out the best excellent content by SHG effectiveness mapping of each crystal. Wonderful surface sprucing and twin band AR coatings with quite lower losses enable EKSMA Optics to supply KTP crystals appropriate for intracavity SHG software.
KTP crystals are optimized for SHG intracavity configuration in small peak electric power CW lasers. Because of the big number of passes in the crystal, very low insertion losses and substantial homogeneity are important for conversion efficiency.
However, sizeable linear EO coefficients and reduced dielectric constants32, which make KTP desirable for EO programs for instance EO modulators and Pockels cell (Computer), have not been perfectly explored for machine apps. A particularly essential advantage of KTP crystals in practical electro-optical purposes could be the steady Actual physical Houses. Its dielectric frequent and electro-optic coefficient are insensitive to frequency, which ensure it is has great frequency steadiness. Its electro-optic coefficient is insensitivity to temperature, which led a properly temperature steadiness. Furthermore its piezoelectric coupling influence is weak, which ensure the sensor steady in the products with more vibration.
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Use the wonderful problems threshold, harmonic conversion performance, and section-matching array of Borate crystals for frequency multiplication in lasers and amplifiers. Learn More
Considering that the superb EO Qualities of KTP had been realized in 1976 together with the obtaining of nonlinear properties, lots of initiatives had been built to understand its EO programs, based on which we recognized the preparing of enormous measurement, superior injury resistance, and reduced conductivity crystals further more to fabricate it into EO switches and EO modulators. It is possible to grow KTP crystals with a complete pounds better than ten kg at a person time (one particular autoclave for every cycle), according to the advancement of a big interior diameter autoclave. In the optimized hydrothermal crystal development method, the electro-chromic, photo-chromic, and catastrophic laser-induced damages had been defeat, and crystals with uniform higher optical, electrical, and piezoelectric Qualities had been acquired, producing the industrial software of HKTP EO crystals a fact.
If the KTP crystal is utilised as an EO modulator, the applied electric powered discipline is parallel to your z-axis, and the light propagation path is parallel towards the y-axis or x-axis. If a comparatively decrease change-off voltage is preferred, a y-axis swap is necessary. In follow, extended x-axis switches tend to be made use of to get the specified minimal turn-off voltage for crystal expansion economics. The E-O coefficient from the H-KTP crystal may be identified as stick to in Desk 3. Our EO coefficient measurement benefits at 632.eight nm are per the 1986 test final results utilizing the hydrothermal strategy KTP32.
The one micron gentle is often created from a neodymium doped crystal of YAG, Yttrium orthovanadate, or YLF. The KTP could possibly be applied read more exterior the laser cavity or intracavity wherever the laser intensity is larger. This frequency doubling impact is often known as second harmonic generation.
The green laser radiation that KTP produces has many purposes. Inexperienced laser light-weight has superior penetration as a result of ocean h2o, so it truly is utilized for interaction and bathymetric measurement of The ocean flooring and riverbed functions.